(625 ILCS 5/11-313)(from Ch. 95 1/2, par. 11-313)Sec. 11-313. Unlawful possession of highway sign or marker. The Department and local authorities, with reference to traffic
control signs, signals, or markers owned by the Department or local
authority, are authorized to indicate the ownership of the signs,
signals, or markers in letters not less than
3/8 inch or more than 3/4 inch in height, by use of a metal stamp,
etching, or other permanent means and, except for employees of the
Department or local authorities, police officers, contractors and their
employees engaged in a highway construction contract or work on the
highway approved by the Department or local authority, it is unlawful
for any person to possess such sign, signal, or marker so
identified.(Source: P.A. 91-512, eff. 8-13-99.)